Renesas R7FA2E2A52DBY#HC1

Overview

R7FA2E2A52DBY#HC1 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 32-KB code flash, 8-KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware security (AES128/256, TRNG), designed for industrial sensor nodes and battery-powered edge devices.

For engineers reviewing the R7FA2E2A52DBY#HC1 datasheet, R7FA2E2A52DBY#HC1 pinout, R7FA2E2A52DBY#HC1 application, or R7FA2E2A52DBY#HC1 equivalent, key selection criteria include its WLCSP-16 package, -40°C to +85°C temperature grade, 1.6–5.5 V wide supply range, dual low-power timers (AGTW), and I3C/SPI/SCI connectivity for compact embedded control.

Technical Context

The R7FA2E2A52DBY#HC1 implements the Armv8-M architecture with Memory Protection Unit (MPU) and CoreSight™ debug support, enabling secure, scalable firmware execution in resource-constrained environments. Its clock system integrates HOCO/MOCO/LOCO oscillators with trim capability and a dedicated IWDT oscillator for fail-safe timing.

System-level features include Event Link Controller (ELC) for CPU-free peripheral coordination, Data Transfer Controller (DTC) for autonomous data movement, and safety mechanisms such as SRAM ECC, flash area protection, ADC self-diagnosis, and CAC for clock accuracy validation-targeting functional safety-aware designs without external supervision.

Key Specifications

Pinout & Package

Package: 16-pin WLCSP (1.84 mm × 1.87 mm, 0.4 mm pitch), exposed die pad recommended for VSS connection; rated for -40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R7FA2E2A52DBY#HC1, R7FA2E2A52DNJ offers more I/O in a larger package while R7FA2E2A53CBY maintains identical form factor with extended temperature rating-enabling design reuse across industrial tiers without firmware changes.

Availability

R7FA2E2A52DBY#HC1 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, medical wearables, and home appliance control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R7FA2E2A52DBY#HC1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.

The RA2E2 Group targets cost-sensitive, ultra-low-power embedded applications with Arm Cortex-M23 cores, integrated security, and rich analog/peripheral sets-designed to accelerate development of certified, production-ready edge devices.

FAQ

What is the maximum operating frequency of the R7FA2E2A52DBY#HC1?

The R7FA2E2A52DBY#HC1 operates at a maximum frequency of 48 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal sources, and is maintained across its full 1.6–5.5 V supply range and -40°C to +85°C temperature grade. The R7FA2E2A52DBY#HC1 includes clock accuracy measurement (CAC) to validate timing integrity in real time.

Does the R7FA2E2A52DBY#HC1 support CAN communication?

Yes, the R7FA2E2A52DBY#HC1 integrates a dedicated CAN module compliant with ISO 11898-1, supporting bit rates up to 1 Mbps. It includes message filtering, FIFO buffering, and error handling features. The R7FA2E2A52DBY#HC1 does not require external transceivers for physical layer interfacing-only a standard CAN transceiver IC (e.g., TJA1042) is needed for bus connection.

What package type and pin count does the R7FA2E2A52DBY#HC1 use?

The R7FA2E2A52DBY#HC1 uses a 16-pin Wafer-Level Chip-Scale Package (WLCSP) measuring 1.84 mm × 1.87 mm with 0.4 mm pitch. Its part number suffix "BY" explicitly denotes this WLCSP variant, and "D" indicates consumer-grade qualification with -40°C to +85°C operating temperature. The R7FA2E2A52DBY#HC1 exposes 11 GPIOs, including 2 with 5-V tolerance (P400, P401).

How much flash and RAM memory does the R7FA2E2A52DBY#HC1 include?

The R7FA2E2A52DBY#HC1 includes 32 KB of code flash memory (with 100,000 program/erase cycles), 2 KB of data flash memory, and 8 KB of on-chip SRAM with optional ECC or parity protection. These memory resources are sufficient for RTOS-based firmware, sensor fusion algorithms, and secure cryptographic operations-all while maintaining ultra-low active and standby power consumption.

Is the R7FA2E2A52DBY#HC1 suitable for applications requiring functional safety certification?

The R7FA2E2A52DBY#HC1 includes multiple hardware safety features-SRAM ECC, flash area protection, ADC self-diagnosis, CAC, CRC calculator, and independent watchdog (IWDT)-that support IEC 61508 SIL2 and ISO 13849 PLd development. While the R7FA2E2A52DBY#HC1 itself is not pre-certified, its integrated mechanisms reduce effort for end-equipment certification when implemented per Renesas functional safety manuals.